US3147766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary plug valve and operator therefor
Assignee: Rockwell Manufacturing Co
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Filing: 1960-09-19
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Granted: 1964-09-08
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Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H Herring
- 👤 Louis L Neubauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:48
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/53; F16K31/535; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2214; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19749; Y10T74/19767; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/20492; Y10T74/20504
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
149 words
AN OPERATOR FOR A VALVE OF THE TYPE CHARACTERIZED BY A BODY HAVING A THROUGH PASSAGE INTERSECTED BY A PLUG SEATING BORE, BY A PORTED PLUG ROTATABLY MOUNTED IN SAID BORE ABOUT ITS AXIS FOR MOVEMENT BETWEEN POSITIONS WHERE IT BLOCKS AND ALIGNS ITS PORT WITH SAID PASSAGE, AND BY A PLUG OPERATING STEM COMPRISING A LEVER HAVING MEANS FOR SECURING IT TO SAID STEM AT RIGHT ANGLES TO SAID STEM AXIS, A ROTATABLE SHAFT EXTENDING PARALLEL TO THE PLANE OF MOVEMENT OF SAID LEVER, AN EXTERNAL HELICAL GROOVE OF SUBSTANTIALLY SEMI-CIRCULAR CROSS SECTION ON SAID SHAFT, A BALL BEARING NUT MEMBER HAVING AN INTERNAL HELICAL GROOVE COMPLEMENTARY TO SAID SHAFT GROOVE, AN ENDLESS COLUMN OF BALL BEARING ELEMENTS IN SAID GROOVES, MEANS FLEXIBLY PIVOTALLY CONNECTING SAID LEVER TO SAID NUT MEMBER, AND MEANS FOR ROTATING SAID SHAFT TO AXIALLY DISPLACE SAID NUT MEMBER THEREALONG TO ROCK SAID LEVER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |